Y-\(\dfrac{27}{54}\)-\(\dfrac{1212}{3636}\) =\(\dfrac{1}{6}\)
plssssssss
y - 27/54 - 1212/3636 = 1/6
y - 1/2 - 1/3 = 1/6
y = 1/6 + 1/2 + 1/3
y = 1
A= 121212/363636+1212/3636
mn giúp mk nha
\(A=\frac{121212}{363636}+\frac{1212}{3636}\)
\(=\frac{1}{3}+\frac{1}{3}=\frac{2}{3}\)
#)Giải :
\(\frac{121212}{363636}=\frac{121212:10101}{363636:10101}=\frac{12}{36}=\frac{1}{3}\)
\(\frac{1212}{3636}=\frac{1212:101}{3636:101}=\frac{12}{36}=\frac{1}{3}\)
\(\Rightarrow A=\frac{1}{3}+\frac{1}{3}=\frac{2}{3}\)
phân số 1212/3636 viết dưới dạng phép chia có dư là:...
= 0 ( dư 1212 ) nha
rút gọn phân số
36 /108 ; 75/105 ; 1212/3636; 75/100
36/108=1/3
75/105=5/7
1212/3636=1/3
75/100=3/4
k cho minh nhe
\(\frac{121212+12121212-1212}{363636+36363636-3636}\)
tính nhanh
\(\frac{121212+12121212-1212}{363636-36363636-3636}=\frac{12\left(111111+11111111-1111\right)}{36\left(111111+11111111-1111\right)}=\frac{12}{36}=\frac{1}{3}\)
\(\frac{1}{3}\)
chúc ban hk tốt!!(k cho tui nhé)
1 tính nhanh: a/
[ 2727/ 3636 + 1212/5454 ] x 9/10
lưu ý : / là dấu gạch phân số nha !
2, tím số nhort nhất có 3 chữ số biết rằng số chia hết cho 9, chia hết cho 5 và chia hết cho 3
1 tính nhanh: a/ [ 2727/ 3636 + 1212/5454 ] x 9/10 = (3/4 + 2/9) x 9/10
= 3/4 x 9/10 + 2/9 x 9/10
= 27/40 + 1/5
= 27/40 + 8/40
= 7/8
\(\frac{121212+12121212-1212}{363636+36363636-3636}\)
Nhờ các bạn tính nhanh hộ mình
\(\frac{121212+12121212-1212}{363636+36363636-3636}\)
\(=\frac{12.10101+12.1010101-12.101}{36.10101+36.1010101-36.101}\)
\(=\frac{12\left(10101+1010101-101\right)}{36\left(10101+1010101-101\right)}\)
\(=\frac{12}{12.3}\)
\(=\frac{1}{3}\)
Ta có: \(\frac{121212+12121212-1212}{363636+36363636-3636}\)
=\(\frac{12\times\left(10101+1010101-101\right)}{36\times\left(10101+1010101-101\right)}\)
=\(\frac{12}{36}\)
=\(\frac{1}{3}\)
\(\frac{121212+12121212-1212}{363636+36363636-3636}\)
\(=\frac{121212+12121212-1212}{3\times121212+3\times12121212-3\times1212}\)
\(=\frac{121212+12121212-1212}{3\times\left(121212+12121212-1212\right)}\)
\(=\frac{1}{3}\)
_Chúc bạn học tốt_
Tính nhanh :
a]7,3*8,3+3,8*7,3-5*7,3*0,4
b]1/10:0,1-1/8:0,125+1/2:0.5-1/4:0,25
c;(2727/3636+1212/5454)*9/70
d]120*999+120/5*2,5*125*4*0,8
a) 7.3x8.3+3.8x7.3-5x7.3x0.4
=7.3x(8.3+3.8-5x0.4)
=7.3x10.1
=73.73
b)\(\frac{1}{10}:0.1-\frac{1}{8}:0.125+\frac{1}{2}:0.5-\frac{1}{4}:0.25\)
=1-1+1-1=0
c)\(\left(\frac{2727}{3636}+\frac{1212}{5454}\right)\times\left(\frac{9}{70}\right)=\left(\frac{3}{4}+\frac{2}{9}\right)\times\left(\frac{9}{70}\right)\)
=\(\frac{35}{36}\times\frac{9}{70}\)=\(\frac{1}{8}\)
d) 120x999+\(\frac{120}{5\times2.5\times125\times4\times0.8}\)
=120x999+\(\frac{120}{5000}\)
=120x999+\(\frac{3}{125}\)
=119880.024
3 . x + 24 = 2 . x + 84
3636 : ( 12 x - 91 ) = 36
Giúp mik với các bn huhu
a 3.x-2.x=84-24
x=60
b 12x-91=3636:36
12x-91=101
12x=101+91
12x=192
x=192:12=16
3x + 24 = 2x + 84
=> x = 84 - 24
x = 60
3636 : ( 12x - 91 ) = 36
12x - 91 = 101
12x = 101 + 91
12x = 192
x = 16